Manufacture of rubber-lined hose



R. OOWEN. Manufacture of Rubber Lined Hose.

No. 226,038 Patented Mar. 30, 1880.

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J u A \ZHE EEEEE. i u FIY/EZ'LEITE 1 fi ww u ROBERT COWEN, OFCAMBRIDGEPORT, MASSACHUSETTS. J

MANUFACTURE OF RU BBER-LINED HOSE.

SPECIFICATION forming part of Letters Patent No. 226,038, dated March30, 1880.

Application filed February 9, 1880.

To all whom it may concern Be it known that 1, ROBERT GoWEN, ofOambridgeport, county of Middlesex, State of Massachusetts, haveinvented an Improvement in the ll/Ianufacture of Rubber-Lined Hose, ofwhich the following description, in connection with the accompanyingdrawings, is a specification.

My invention relates to a new method of producing rubber-lined textilehydraulic hose, whereby the textile part of the hose is formed outsideof but not directly on or in contact with the lining, the covering as itis formed being delivered upon and fitted about the lining closely anduniformly, without danger of straining, breaking, or compressing thelining or disturbing its uniformity of size and diameter, and also incertain mechanism employed in the manufacture of such hose, whereby thefabric is first formed over and upon and gaged to size according to thesize of a mandrel, after which it is delivered from the saidgagingmandrel directly upon the lining-tube.

I desire it to be understood that I make no specific claim for theapparatus herein shown for making the textile part of the hose, as it iswell known and in common use, and instead of the apparatus shown I mayemploy any other well known equivalent apparatus to either weave, braid,or knit the textile covermg.

The rubber tube, which is to constitute the lining of the finished hose,is led into and through a hollow former, (shown as a mandrel,) on whichis formed the textile tube, which passes off from the hollow former uponand unites closely with the rubber tube just as the latter emerges fromthe interior of the hollow former. This former is herein shown as arigid tube of metal, but may be of hard rubber or other suitablematerial, preferably tapering slightly both on its inner and outersurface.

Where thefabric is formed upon it, it is of sufficient diameter andthickness to determine the interior diameter of the fabric and to serveas a mandrel in forming the textile tube about it, and from this pointit tapers to an edge as thin as practicable, where the fabric beingdrawn from its outer surface comes into cont-act with the liningemerging from it. This former tapers on the outside for the purpose offacilitating the delivery of the textile tube upon the rubber tube, andtapers upon the inside, that there may be as little friction as possiblebetween the rubber tube orlining and the hollow former; but I do notmean to limit my invention to a former that tapers, for it is obviousthat I might employ a mandrel of uniform cylindrical shape, the metalbeing quite thin; but such a mandrel I do not prefer.

In this manner I am enabled to make the textile cover or tube close andcompact, and of the proper internal diameter, without at the same timebinding the rubber tube, and also to deliver it upon the rubber tubeWithout breaking the latter or causing it to collapse, and Withoutdisturbing its uniformity of size and diameter, as would be the casewere the textile covering formed directly upon the tube itself, thelatter acting as a mandrel, as has been done.

Figure 1 represents, in vertical section, sufficient of a machine orapparatus to produce a lined hose in accordance with my invention, andFig. 2 a view of the former or forming device separate.

In the drawings, n represents beams or rollers, of anydesired number, tohold the threads I), which, as herein shown, constitute the warpthreadsto be interlocked or united into a tubular fabric or textile cover 0, bythe weftthreads 6, carried by the shuttles d, these parts being inconstruction and operation all as commonly made, and not of myinvention.

In the drawings I have shown a peculiarshaped perforated ring, f, whichI desire it to be understood is not, in practice, apart of my apparatus,and it is herein employed only to keep the warp-threads separated andcrossed, as they will be in practice when the shuttles are travelingthrough the sheds of the warps.

I have omitted from the said drawings the warp-sheddin g mechanism, asit will be of any usual construction-as, for instance, in United StatesPatent No. 189,353.

The india-rubber tube g, to be covered with the textile tube or cover,will preferably be of vulcanized india-rubber or equivalents therefor,coated upon its outside with any suitable cement-as, for instance, onecomposed of inthe art that the textile tube, instead of being,

dia-rubber dissolved in naphtha, such cement being well known; but anunvulcanized lining may be used.

The tube 9' may be wound upon a reel, h, from which it will be led intoand through the tubular former 41, depending from a rigid part, k, ofthe machine, and the said tube 9 will fill the interior of the saidformer at its lower or delivery end.

The former t at 2, where the warp and weft are locked and tightened uponit to give solidity to the textile covering 0, and where the internaldiameter of the said cover 0 is determined, is made as thin as possibleconsistent with the strain it is to bear, and tapers from such part 2 toits lower end, 3, Where it occupies the least annular space between theinterior of cover 0 and the exterior of tube 9, and thus the cover 0,completed and gaged as to internal diameter, may be fed from the end ofthe former as the rubber tube g emerges or is fed therefrom, and beapplied about the said india-rubber tube, which it will fit snugly.

I aim to and in practice I make the former t of such length between thepart2 and its delivery end that the tension or strain of the warp andweft continue to affect the cover 0- but to a "ery slight degree-untilthe textile cover actually comes in contact with the indiarubber tube;but the change in the interior diameter of the textile cover 0 is solittle at a point opposite the delivery end of the former that thedecrease in the internal diameter of the cover is only sufficient tocompensate or make up for the very thin end of the former, to insurethereby a close fit between the interior of the cover and the exteriorof the tube g, but without contracting or displacing the tube or causingit to collapse. The rubber tube and cover cs0 applied may then betreated and united togetheras, for instance, as described in EnglishPatent No. 1,861, July 3, 1857.

While applying the cover 0 to the tube g the latter will be keptinflated in any usual way sufficiently to insure the contact of theexterior of the said tube with the interior of the former at itsdelivery end.

If the india-rubber tube g is not vulcanized, it will be powdered orcoated or rolled in an apron in any usual way, to prevent the said tubeadhering, one part to another. The ends of the tube and cover havingbeen once united, the lined fabric will be acted upon by any suitableand usual take-up, which will draw the same from the hollow former andout of the machine.

I have herein described and shown the former as a tube, upon the outsideof which the textile tube was made and gaged to size, and this is theform I prefer to secure the nearest approximation to size of the outsideof the indiarubber tube and the interior of the textile tube; but itwill be apparent to one skilled in formed and gaged about a tube, mightbe formed within the mouth ofa tube or ring,

as in United States Patent N 0. 161,27 3, wherein with the iudia-rubbertube, would carry the latter with it, as in the process hereinbeforedescribed.

I am aware that it is not new to first weave a cover and then draw anindia-rubber tube therein; but such process is difficult, expensive,requires special machinery, and has, in practical operation, manydisadvantages, and much difficulty is experienced to insure a properclose fit at all points between the rubber and fabric. Moreover, thisprocess is entirely inapplicable to hose of small diameter, as it is inpractice difficult to draw the lining through the cover without breakingthe lining.

I am also aware that an india-rubber tube distended on a core has beencovered with a textile cover; but in such plan the india-rubber tube ismore or less twisted and injured, and is very hard to handle; and,moreover, it is impracticable to use a lining of unvulcanized rubber inmaking hose by that process, as the strain of the threads breaks andcuts through the gum.

I am also aware that it is not novel to weave a textile tube directlyupon a hollow former.

I claim 1. That improvement in the art or method of manufacturingindia-rubber-lined textile hose which consists in forming the textilecover and gaging it substantially as to internal size with the liningwithin, but not in contact with the cover, and then delivering the saidtextile cover so formed, substantially as described, directly upon theiudia-rubber tube.

2. In a machine for the manufacture and lining of hydraulic hose, ahollow former, substantially such as described, to receive within it andguide an india-rubber tube, combined with the mechanism to support anddeliver the india-rubber tube, and with mechanism, substantially as setforth, to form upon the said former a textile tube or cover having aninternal diameter substantially equal to the external diameter of theindia-rubber tube, whereby the textile tube may be separately formed toexact size and be closely fitted to the india-rubber tube, substantiallyas described.

In testimony whereof I have signedmyna-me to this specification in thepresence of two subscribing witnesses.

ROBERT (JO-WEN.

Witnesses:

FREDERICK P. Frsn, N. E. C. WHITNEY.

